archive mirror
 help / color / mirror / Atom feed
From: Tushar Sugandhi <>
Subject: [dm-devel] [PATCH 4/6] dm ima: add a warning in dm_init if duplicate ima events are not measured
Date: Fri, 13 Aug 2021 14:37:59 -0700	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>

The end-users of DM devices/targets may remove and re-create the same
device multiple times.  IMA does not measure such duplicate events if the
configuration CONFIG_IMA_DISABLE_HTABLE is set to 'n'.
To avoid confusion, the end-users need some indication on the client
if that configuration option is disabled.

Add a one-time warning to dmesg during dm_init if
CONFIG_IMA_DISABLE_HTABLE is set to 'n', to notify the end-users that
duplicate events will not be measured in the ima log.

Signed-off-by: Tushar Sugandhi <>
 drivers/md/dm.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 2e82757b4ab7..948cb0dc5fc4 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -265,6 +265,12 @@ static int __init dm_init(void)
 	int r, i;
+	       " Duplicate IMA measurements will not be recorded in the IMA log.");
 	for (i = 0; i < count; i++) {
 		r = _inits[i]();
 		if (r)

dm-devel mailing list

  parent reply	other threads:[~2021-08-13 21:39 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-13 21:37 [dm-devel] [PATCH 0/6] updates to device mapper target measurement using ima Tushar Sugandhi
2021-08-13 21:37 ` [dm-devel] [PATCH 1/6] dm ima: prefix dm table hashes in ima log with hash algorithm Tushar Sugandhi
2021-08-13 21:37 ` [dm-devel] [PATCH 2/6] dm ima: add version info to dm related events in ima log Tushar Sugandhi
2021-08-13 21:37 ` [dm-devel] [PATCH 3/6] dm ima: prefix ima event name related to device mapper with dm_ Tushar Sugandhi
2021-08-13 21:37 ` Tushar Sugandhi [this message]
2021-08-13 21:38 ` [dm-devel] [PATCH 5/6] dm ima: update dm target attributes for ima measurements Tushar Sugandhi
2021-08-13 21:38 ` [dm-devel] [PATCH 6/6] dm ima: update dm documentation for ima measurement support Tushar Sugandhi
2021-08-20 20:19 ` [dm-devel] [PATCH 0/6] updates to device mapper target measurement using ima Mike Snitzer
2021-08-23 17:18   ` Tushar Sugandhi

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \ \ \ \ \ \ \ \ \ \ \
    --subject='Re: [dm-devel] [PATCH 4/6] dm ima: add a warning in dm_init if duplicate ima events are not measured' \

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).